A company that makes hair-care products had 6000 people try a new shampoo. Of the 6000 people, 12 had a mild allergic reaction. What percent of the people had a mild allergic reaction?

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t. inv.2t to find the value of t for the interval calculation.

The data set gives the number of bottles filled by each of the workers in a bottling plant in one day. {36, 18, 16, 28, 68, 35, 37, 66, 38, 40, 41, 44, 72, 29} the best measure of center for this data set is the , and its value expressed up to one decimal place is

Which is the next step in the following construction of an equilateral triangle? connect a and d with a straightedge connect c and with a straightedge. connect c and e with a straightedge connect d and f with a straightedge